Shoe-staying machine



Dec. 25 1923.

A. H. DE VOE SHOE STAYING MACHINE Filed May a,

1919 3 Sheets-Sheet 1 IINVENTOR MM fr. 4% BY (4 TTORNEY &

Dec. 25 1923. V

. A. H. DE VOE SHOE STAYING MACHINE Filed May 5, 1919 3 Sheets-Sheet 2 MM N fl WITNESSES j QPZW A. H. DE VOE SHOE-STAYING MACHINE Dec. 25, 1923.

s Sheets-Sheet 5' *PiLesk y 5, 1919 wl m ESSES ORNE Y Patented Dec. 25, 1923.

STATES UNITED PATENT OFFICE.

ALBERT H. DE VOE, OF WESTFIELD, NEW JERSEY, ASSIGNOR TO THE SINGER MANU- FACTURING COMPANY, A OORPQBATION OF NEW JERSEY.

SHOE-STAYING MACHINE.

Application filed May 3, 1919.

This invention relates to sewing machines and particularly to machines for sewing stays to shoe uppers.

It aims to provide a new and improved construction and arrangement of parts to enable an operator to turn out more and better work than heretofore. To this end it contemplates an improved organization of a strip-guide, strip-feeding mechanism and strip-cutting mechanism which require but a single manual operation on the part of an operator to cut a strip and arrest its advance when one shoe upper, or other ticle, is about to be completed.

The construction comprises essentially a pivoted strip-guide normally held in a position in which a cutter, located at the delivery end of the strip-guide, is ineffective, and in which a strip-feeding mechanism is effective to advance a strip simultaneously with the body material. The strip-guide may be swung on its pivot to bring the cutter into severing relation with the strip and simultaneously stop the strips advance. A treadle mechanism, located below the cloth-plate is provided for shifting the strip-guide to its different positions and therethrough gov erning the effectiveness of the strip-cutter and strip feeding mechanism.

Other objects of the invention will appear in the following detailed description of the drawings in which Fig. 1 represents a sewing machine in front elevation with the invention applied thereto. Fig. 2 represents a plan view of the same with the overhanging arm broken away and the cloth-plate removed for unobstructive view of the new construction. Fig. 3 represents the bottom plan view of the machine shown in Figs. 1 and 2. Fig. 4.- shows a feed-dog and the strip-guide of the present invention partly in section with the stripfeeding mechani n exposed to view. Fig. represents a feeddog supporting bar with a feed-dog and the strip-feeding element of the present in- Serial No. 294,395.

'vention thereon, a push lever for shifting the strip-feeding element appearing in spaced operative relation therewith, and both parts being shown in perspective. Fig. 6 represents a section through the strip-feeding mechanism and shows the relative arrangement of a wedge and its operating pusher- Fig. 7 shows the strip-guide with the cutter arranged at its delivery end. Fig. 7 is a longitudinal vertical section through the strip-guide to show the mounting of the ledger-blade of the stay-cutter. Fig. 8 shows in spaced perspective component parts of the cutting mechanism. Fig. 9 illustrates a treadle operable lever for controlling the position of the strip-guide. Fig. is a detail perspective view of the knife as anchored to a stationary pin on the machine frame; this construction being a modification of that shown in Figs. 1 and 2.

The invention is illustrated applied to a chain-stitch machine having a plurality of needles 1, and a corresponding number of loopers 2 which may be actuated in any suitable manner. A feed-dog 3 whose opposite ends are sustained by a U-shaped member or yoke 4; is supported on a feed-dog carrying bar 5 pivoted at 6 to the upper end of a feed-rocker 7 which is actuated through the link 8 from an eccentric on the main-shaft 9 in a manner well known. A presser-foot 10 is provided on the lower end of a presserbar 11 slidably supported in the head 12 depending from an overhanging arm 13 which is supported by the standard 1a formed integral with the base-plate 15, the parts 12 to 15, inclusive, constiti'lting the frame of the machine.

The strip-guide of the present invention indicated generally by the numeral 16, is located in front of the needles adjacent the front edge of the cloth-plate indicated in dotted lines at 17 in Fig. 1. The strip guide 16 is of the angular form in longitudinal section which is shown most clearly in Fig. 4t and is movably sustained between the pivot bearing screws 18 threaded into spaced bosses which are carried by a supporting plate 19 which is secured by the screws 20 fast to the frame of the machine. A strip-guiding channel indicated at 21 with a tension applying linger 21' in its receiving end is covered in part by a plate 22 having an elongated stiletto slot 23 and in part also by'an L-shaped member 24 which constitutes a ledger-blade of the cutting mechanism to be subsequently described. The strip-guide has a depending and bent arm 25 which receives the end 26 of a rod 27 slida'bly mounted transversely of the base of the machine,a coil spring 28 about the rod 27 thrusting against a collar 29 on the rod and normally swinging the bent arm as viewed in Fig. 4 in a clockwise direction to hold the strip-guide raised. The

rear end of the rod 27 is sustained by a plate 30 secured by the screws 31 to the baseplate 15 and this plate 30 also holds in a groove 32 in the base-plate 15 a second rod 33 having a beveled extremity 33' which is adapted to shift the rod 27. The rod 33 has one end caught in a link 34 pinned at 35 to a lever 36 which is fulcrumed on the stud-screw 37 disposed horizontally trans verse the main-shaft 9, its apertured end 38 being adapted to receive a connection 39 extending to a foot-treadle or knee shift '(not shown). One end of the link 34 is forked as indicated at 34 to embrace a pin 40 in a bellcrank 41 whose fulcrum-pin is parallel to the stud-screw The bellcrank 41 is adapted to be connected to the presser-bar 11 to permit lifting the presserfoot in a manner fully disclosed in my Patent No. 1,420,413, dated June 20, 1922.

The parts are so arranged that when the apertured end 38 of the lever 36 is swung downwardly the rod 33 has no action upon the strip-guide but that when the lever is swung in the opposite direction the rod 33 will have its beveled end 33 moved against the-spring operated rod 27 and therethrough will move the lower end of the arm 25 toward the operator and in this way the delivery end of the strip-guide may be depressed from its normal operating position in which it is shown in Fig. 4 down below the surface of the cloth-plate.

A cutting mechanism and a strip-feeding mechanism are thrown into and out of effective relation respectively with the strip passing through the stripguide when the front end of the latter is depressed.

The cutting mechanism comprises the before mentioned ledger-blade 24 which is adjustably secured to the top of the stripguide by the screw-and-slot connections 45 and a second cutting blade 46 having a cutting edge 47 and a forked extremity 48 and secured to the rectangular projection 49 formed on the end of a fulcrum-pin 50 which is encircled by a coiled spring 51 reacting against the bottom of a socket formed in the strip-guide and a collar 52 fast on the end of the pin to hold the blade 46 yieldingly against the forward edge of the ledger-blade 24. Between the cutting blade 46 and the delivery end of the stri rguide 1G a wear plate 53 of the shape shown in Fig. 8 is interposed. Forked end 48 of the cutting blade 46 is adapted to embrace either a pin 54 fixed in a standard 55 rising from the base-plate, see Fig. 10, or a pin 56, Figs. 1 and 2, adjustably connected at 57 to a lever 58 fulcrumed on a shouldered stud-screw 5.) and having a pin 60 extending laterally from its opposite end into the sleeve portion of a strap 61 embracing an eccentric 62 on the end of the main-shaft 9. Through these connections the knife 46 is continually vibrated, its cutting edge 47, however, not crossing the channel 21 of the strip-guide unless the delivery end thereof is depressed. In the alternative form shown in Fig. 10 which is preferable in some respects because it is simpler, the'cutting edge 47 of the knife 46 is arranged belou and clear of the guiding channel 21 as long as the strip-guide occupies its normal position,

When, however, the delivery end of the strip-guide is depressed, the knife 46 and the blade 24 are brought into cooperative cutting relation and this is true whether thecutting blade 46 be vibrating continuously or the once at the time the stay is cut. In both instances the cutting action is manually controlled or governed through depression of the delivery end of the strip-guide The member or yoke 4 sustaining the feed dog 3 is extended forwardly as indicated at 63 toward the front of the machine. as illustrated best in Figs. 4 and 5 and. to this extension at 64 is pivoted a small rocker'65 carrying a strip-feeding element 66 on one of its arms which is yieldingly urged in a clockwise direction as viewed in Fig. 4 by a coiled spring 67 interposed between it and the feed-dog supporting. bar extension 63. The strip-feeding element 66itself is elastic and is projected through a cut out portion 68 in the under side of the strip-guide 16 so that it may engage the under side of a strip which is in the channel 21 of the strip-guide.

lit is desirable at times to withdraw the st1.'ip-feeding element 66 from engagement with the strip to discontinue its advance and to this end a member 69 slidably sustained by a pin 70 sleeved in the extension 63 with a stop collar 71 on its opposite end and normally urged by a coiled spring 7 2 away from the extension 63 is provided with a wedge indicated at 73 adapted to separate the lower arm of the rocker 65 from the relatively fixed extension 63 of the feed-dog supporting bar and, thereby to withdraw the strip-fceding element 66 fr in engagement with a strip. To shift the member 69 so that the wedge 73 will lower or withdraw the strip-feeding element 66 an angle-lever 74 having a lateral face 75 is fulcrumed at 76 to any convenient fixed part such as the plate 19 supporting the stri 'i-guide and the lower end 77 of the lever 74 is provided with a roller 78 which is adapted to be Jil struck' by a second roller 79 secured to the depending arm 25 of the strip-guide and therethrough to force the wedge 73 between the extension 63 of the feed-supporting member and the lower arm of the rocker 65. Through the described connections it will thus be seen that when the delivery end of the strip-guide is depressed the work-engaging element of the strip-feeding mechanism will be shifted relative to the strip-guide and by its withdrawal from engagement with the strip arrest further advance of the strip.

In the operation of the machine an operator will first introduce a strip of material, or stay as it is called in the trade, into the guiding channel 21, it necessary employing a stiletto tor the purpose, until the free end of the strip is beyond the strip-feeding element 66. The strip may then be rapidly advanced to the presser-foot by operating the machine. The operator may then introduce shoe uppers under the presser-toot and superimpose upon their butt or lapped joint, as the case may be. a stay-strip. The machine is then started up and the staying operation performed. hen the staying operation has proceeded far enough for the oporator to judge about the right length to cut Oil the stay-strip to suit the uppers being stitched together, the delivery end of the strip-guide may be depressed by foot or knee operation of the lever 36 which will result in severing the strip and simultaneously ar resting further advance thereof.

hile the invention comprehends in its preferred form the combination of a stripguidc, a cutter and a strip-feeding mechanism as has been fully described above, it will be understood that it comprehends as well the use of the strip-guide in combination with either the cuttin mechanism or the strip-feeding mechanism. It also comprehends the use of the cutting and feeding mechanisms without the strip-guide where it will be possible for the operator to use her hands to direct the strip. Reference should therefore be had to the accompanying claims for a fuller understanding of the scope of the invention.

Having thus set forth the nature of the invention, what I claim herein is- 1. In a sewing machine, in combination,

' movable means for guiding a strip, and

means for severing the strip, said lastnamed means being governed by movement of the first-named means and comprising a cutting element movable with respect there to.

2. In a sewing machine, in combination. a movable si'rip'guido, and strip-cutting mech anism comprising a cutting element movable with respect to and rendered effective by movement of the strip-guide.

3. In a sewing machine, in combination, a shiftable strip-guide, strip-cutting mechanism including a pair of cooperating cutting elements one of which is fixed to the strip-guide and the other of which is 1novably sustained, and means for shifting the strip-guide to bring the cutting elements into cooperative cutting relation.

1. In a sewing machine, in combination, a movable strip-guide, a strip-cutting mechanism including a pair of cooperating cutting blades mounted for operation with their faces in fixed angular relation one of which is fixed to the strip-guide, and means for moving the strip-guide and blade fixed thereto to bring the cutting blades into cooperative cutting relation.

5. In a sewing machine, in combination, a movable strip-guide, cutting mechanism including cooperating blades fixed and pivoted respectively to the guide, and means for moving the strip-guide and bringing the blades into cooperative cutting relation.

(5. In a. sewing machine, in combination, a pivoted strip-guide, cutting mechanism ineluding cooperating blades fixed and pivoted respectively to the guide, and means for moving the strip-guide and bringing the blades into cooperative cutting relation.

7. In a sewing machine, in combination, a movable strip-guide, cutting mechanism including cooperating blades one of which is fixed to the strip-guide and the other of which movably sustained by the stripguide, and means for moving the strip-guide to effect a cooperative cutting action of the. blades.

In a sewing machine, in combination, a pivoted strip-guide, cutting mechanism including cooperating blades one of which is fixed to the strip-guide the other of which is movably sustained by the strip-guide, and means for moving the strip-guide to effect cooperative cutting action of the blades.

9. In a sewing machine, in combination, a pivoted stripguide, cutting mechanism including cooperating blades one of which is fixed to the strip-guide the other of which is pivoted to the strip-guide, and means for moving the strip-guide to effect cooperative cutting action of the blades.

10. In a sewing machine, in con'ibination, a movable strip-guide having a guiding channel, cutting mechanism including cooperating and relatively movable blades sus tained by the movable guide, one of which constitutes a portion of a wall of the guiding channel and the other of which is supported for movement across the channel to cooperate with the first-mentioned blade, and means for moving the guide and for relatively moving the blades whereby a strip may be severed.

11. In a sewing machine, in combination, a strip-guide having a blade fixed thereto, a vibratory blade, said strip-guide being normally held in a position where the blade fixed thereto does not coact with the vibratory blade and being movable to bring the blades into cooperative cut-ting relation.

12. In a sewing machine, in combination, a movable strip-guide, and strip-cuttingmeans pivoted to said strip-gniide and rendered effective or ineffective by movement of aid strip-guide.

13. In a sewing machine, in combination, a movable strip-guide, cutting mechanism including a blade secured to said strip-guide end a second blade pivoted to said stripguide, said blades being yieldingly pressed against each other, and means for changing the operative relation of the two blades when the strip-guide is moved so that cooperative cutting action of the blades may be rendered possible or impossible, and means whereby the strip-guide may be moved.

l-ft. In a sewing machine, in combination, a movable strip-guide having a blade fixed hereto adjacent its delivery end, a second blade cooperatively arranged with respect to the first-mentioned blade, means for continuously operating said second bladenneans normally holding said Strip-guide where the blade. carried thereby is not crossed by the contimiously operated blade, and means whereby said stripruide may be moved to render the blades effective for severance of a strip.

15. In a sewing machine, in combination, a strip-guide having a blade fixed thereto, a second blade, a mainshatt, connections between the main-shaft. and the second blade tor actuating the latter, and means for movin; the first-mentioned blade into cooperative cutting relation with the second blade.

16. In a sewing machine, in combination, a movable strip-guide. a blade fixed thereto, a second blade movable independently of the guide. a lllttlH-Sl'lflit, an eccentric on said 1i1ain-shai", connections between the eccentric id the second blade for moving the latter, and means whereby the strip-guide my be moved to render the blades etlective or inell'ective tor severance of a strip.

17. In a SQWlDfl' machine, in combination, a strip-guide, a blade connected thereto, a second blade, a lever for vibrating the sec ond blade independently oi the guide, means for actuating the lever. and. means whereby the strip-guide may be moved to render the blades ellective or ineffective.

18. In a sewing machine in combination, werlt-advancing mechanism including a feed-dog, a teed-dog supportingr member, a strip-teeding elei'i'icnt on said spaced from said :leeddog, a movable stripguice overhanging said strip-teeding element and means tor rendering said stripteedinn' element ineffective by movement ot the strip-guide.

19. In a sewing machine. in combination, means for advancing work a stitch length member at a time, additional means for advancing 'a strip at substantially the same rate as the work, means for guiding the strip, and means controlled by movement of the stripguiding means for discontinuing effective action of the strip-teeding means.

. 20. In a sewing machine, in con'ibination, a movable strip-guide, means r'or advancing work a stitch-length at a time, additional means -for feeding a strip in unison with the work-Mlvancing means, and means controlled by moven'ient of the stripguide for stopping the feed of the strip.

21. In a sewing machine, in con'ibination, worlc-advancing mechanism including a 't'eeddog, a strip-guide, stepby-step stripteeding mechanism located in advance of the teedwlogr, and means tor discontinuing the s-tcp-by-ste1.) advance of the strip.

In a sewing machine, in c nnbination, worlr-advancing mechanism including a teed-dog, a strip-guide, step-bystep striptceding mechanism located in advance of the teed-dog, and manual means for discontinuing the step-by-step advance of the strip.

2;}. In a sewing machine, in combination, work-advancing mechanism including a 'lced dog, a stripguide, step-by-step strip- :t'eedmgg; n'icchanism located in advance of the teed-dog, and treadle operable meansfor dis contimzing the stepl)y-step advance of the strip.

2%. In a sewing machine, in con'ibination, worieteeding mechanism, shittable means for guidinga strip, means in addition to the work-feeding mechanism for feeding the strip, and means controlled by the shiftable means for guiding the strip for stopping cliective action of the St].'l1')-'ll6(lll1g mechan ism at intervals. I

In a sewing machine having stitchtorming; and work-advancing mechanism, in coml'iination, a movable strip-guide, strip- :teeding mechanism controlled by movement of the strip-guide, and means whereby the :.-strip-guide may be moved to render the strip teed eiiective or inetl ective.

5.6. In a sewing machine, in combination, a movable strip-guide, step-bystep stripleeding mechanism including an element arranged to engage the strip, n'icans -for relatively shitting said element and said stripguide to render the element ineffective upon the strip.

.37. In a sewing machine in combination, a movable strip-guide, step-bystep stripfeeding mechanisn'l ii'icluding an element arranged to engage the strip internally of the strip-guide, a wedge for relatively shitting said element and guide to discontinue feeding: of the strip.

28. In a a movable strip-guide. step-by-step stripi eedingg; mechanism including a stripengaging eleneut, a wedge for moving the element SCWIHQ machine, in combination,

away from engagement with the strip, a thrust-member for shifting the wedge, and means connected to the strip-guide for operating the thrustanember when the stripgnide is moved.

29. In a sewing machine, in combination, a movable sti'ipguide, a strip-feeding member yieldingly held in feeding relation with a strip, means operable by movement of the strip-guide for shifting the member from feeding relation with the strip.

30. In a sewing machine, in con'ibination, a movable strip-guide, a strip-feeding member yieldingly held in feeding relation with L strip, a wedge for shifting the member away from feeding relation with the strip, a spring for normally holding the wedge retracted, a pivoted push-lever for operating the wedge, and means connected to the stripguide for operating the lever.

31. In a sewing machine, in combination, manually controlled strip-cutting mechanism, power-driven strip-feeding means including a strip-engaging device, and means connected to the strip-cutting mechanism for withdrawing said device from engagement with the strip to discontinue advance of the strip when it is severed by the stripcutting mecl mism.

32. In a sewing machine, in combination, stitch-forming mechanism, work-advancing mechanism, additional feeding mechanism in advance of and acting in unison with said work-advancing mechanism, cutting mechanism located between said worlcadvancing mechanism and said additional feeding mechanism, and means for rendering the additional feeding mechanism and the cutting mechanism effective in alternation so that when one is effective the other is not effective.

33. In a sewing machine, in combination, stripfeeding mechanism, a vibratory blade, means for actuating said blade, at ledgerblade shiftable into and out of effective cooperative relation with respect to said vibratory blade, and means whereby said ledger-blade may be shifted and said stripfeeding mechanism simultaneously rendered effective or ineffective.

34. In a sewing machine, in combination, power operated strip-feeding mechanism including a reciprocating strip-engaging mem ber normally acting to advance a strip stepby-step, a strip-cutting device normally ineffective upon the strip and manually controlled means for rendering said reciprocating strip-engaging member ineffective to feed the strip without. arresting its motion and for simultaneously operating the stripcutting device to cut the strip.

35. In a sewing machine, in combination, a movable strip-guide, power operated stripfeeding mechanism, and means governed by movement of the strip-guide for severing a strip and rendering the feeding mecha nism ineffective.

In a sewing machine having stitchforming mechanism and work-feeding n'iechanism, in combination, means for guiding the strip, means for cutting a strip, and additional power driI-ven means for feeding the strip, the operation of said cutting means and said additional feeding means being governed by moven'ient of the strip-guiding means.

537. In a sewing machine having stitchforming mechanism, in con'ibination, workfeeding mechanism inchjiding a feed-dog and a supporting bar tht-irefor, a stripfeed ing element movably sustained on and relative to said bar and spaced in advance of said feed-dog, a strip-guide, cutting mechanism inclnding relatively movable blades sustained by the strip-guide one of which is shaped to clear said bar, and means for rendering the cutting mechanism effective and the strip-feeding mechanism ineffective on moven'ient of the strip-guide.

In a se ing machine having stitchforming and work-feeding mechanism, in con'ibination therewith strip-guiding, cutting and feeding mechanisms, and manual means for moving the strip-guiding mechanism and tl'ierethii'ough controlling the operation of the stript utting' and feeding mechanisms.

In a sewing machine having a clothte, in combination, a strip-guide pivoted adjacent the front of the cloth-plate, an arm connected to said strip-guide, cutting blades located adjacent the delivery end of the strip-guide, stripfeeding mechanism for a work-engaging element located internally of the strip-guide, and connections between said arm and said cutting blades and said feeding mechanism for controlling their action when the strip-guide is moved upon its pivot.

10. In a sewing machine, in combination, a movable strip-guide, a strip-cutter, stripfoeding mechanism, said strip-guide having controlling connections extending to said strip-cutter and said strip-feeding mechanism, and means whereby the position of said stripguide may be altered including a spring normally holding the strip-guide in one position and a treadle connection for shifting the strip-guide against the action of said spring.

11. In a sewing machine having stitchforming and work-advancing mechanism and elotlnplate, in combination, a movable strip-guide located adjacent said cloth-plate, strip-cutting mechanism operatively arranged adjacent said cloth-plate, strip-feeding mechanism operatively arranged underneath said strip-guide, and means located below said cloth-plate whereby variation of the effectiveness of the strip-cutting and strip-feeding mechanisms may be controlled.

4-2. In a sewingmachine, in combination, a movable strip-guide, a strip-cutter, stript'eeding mechanism, connections between said cutter and strip-feeding mechanism and said guide for altering their operative relation when one of them is moved, and means whereby that one of them may be moved.

43. In a sewing machine, in combination, a movable strip-guide, a strip-cutter, stripfeeding mechanism, controlling connections from the cutter and feeding mechanism to the strip-guide, and means including angularly disposed slider-eds and a lever for op erating one of said rods whereby the strip guide may be moved to vary the effectiveness the cutter and strip-feeding mechanism.

44k. In a sewing machine, the combination with a sewing head having stitch-forming mechanism including a reciprocating needle and work-feeding mechanism including a feed-dog, of astay-feeding element mounted on the sewing head in advance of the feedand connected to be operated by said work-feeding mechanism, and means interand worlnfeeding mechanism including a feed-dog, of stay-feeding means mounted in the sewing head and located in advance of the feed-dog, means intermediate the feeddog and stay-feeding means for severing the stay-strip, and means for rendering the stayieedinp; means ineffective when the stay is severed. V

46. In a sewing machine, a four-motion "Feed-dog including operative forwardly and rearwardly disposed ii ork-engaging elements, means for rendering the forward work-engaging; element effective or ineffective at the will of the operator, and a Worksevering implement adapted to operate intermediate said work-engaging elements.

In testimony whereot. I have signed my name to this specification.

ALBERT H. DE VOE. 

